CN1086285C

CN1086285C - Automatic lock slider for slide fastener

Info

Publication number: CN1086285C
Application number: CN95106694A
Authority: CN
Inventors: 寺田弥司治; 青木常隆
Original assignee: YKK Corp
Current assignee: YKK Corp
Priority date: 1994-05-26
Filing date: 1995-05-25
Publication date: 2002-06-19
Anticipated expiration: 2015-05-25
Also published as: KR0137796B1; DE69519893D1; CA2146228A1; JP3330448B2; ES2152996T3; US5625928A; KR950030908A; SG34227A1; EP0683992A3; CN1119510A; JPH07313215A; HK1010316A1; EP0683992A2; DE69519893T2; CA2146228C; EP0683992B1

Abstract

In an automatic lock slider for a slide fastener, a yoke accommodating a locking pawl and a leaf spring has a pair of inwardly directed projections, and a generally C-shaped, narrow rigid strip has on its upper edges a pair of taper surfaces corresponding to the respective projections. As the taper surfaces are guided by the projections, the pawl keeps its suitable posture during the assembling of the slider, and the pawl acts reliably while the automatic locking mechanism is either operative or inoperative. The locking pawl is small in width and has one leg portion to be inserted in a groove of the outer surface of a connector of a slider body. The result is that the number of pressing steps is reduced to minimize press traces on the surface of an upper wing of the slider body so that press traces are prevented from coming out on the slider surface though the yoke is smaller in width compared to the conventional one.

Description

The self-locking slide fastener that is used for slide fastener

Technical field

The present invention relates to a kind of self-locking slide fastener that is used for slide fastener, especially a kind of self-locking slide fastener has at least a slider body to be stamped to form on it, and lock pawl and its associated components place crotch compactly, thereby obtains smooth assembling.

Background technology

When assembling this type self-locking slide fastener, handle and C type snap lock pawl and crotch are assemblied on the slider body, and slider body is included in two ends by the continuous upper and lower wing plate of joint (being the rhombus part).But part member such as slider body and handle punching press or die casting form, and in addition, the lock pawl should not be limited to the elasticity that self has, and it also can have the related springs as separating component.

Now know the machine that is used for the punching press slider body, as in the open SHO31-5628 of Japan Patent, disclosing.Be disclosed in the open SHO56-45447 of Japanese Utility Model and 58-3727 number by the slider body example that is stamped to form.Be disclosed in the slider body of these utility models in open, be used to insert the opening of lock pawl one end except that having, also have multiple boss that is stamped to form and groove on the upper flange, before crotch is assemblied on the slider body, locatees the lock pawl and make it be in stable state with them.The principle of in being stamped to form or dashing the box-like crotch that curved corresponding side surface forms the lock pawl being installed has been described in the open SHO55-17846 of Japanese Utility Model and 58-3527 number simultaneously.

As in above-mentioned prior art data, disclosing, be one or be not one that with spring the lock pawl is always the sheet metal shape of width greater than its required width.Because the lock pawl is installed in the upper surface of upper flange and is arranged in the box-like crotch, so guarantee that motion and connector with handle engages and separate, and preferably reduces the size of locking pawl to greatest extent as long as the lock pawl has enough intensity.

Yet traditional lock pawl has big width, its objective is in order to obtain the lock pawl of bifurcated at one end, and prevents to lock pawl fall down from the side and obtain automatic assembling when assembling.In addition, the upper surface of slider body upper flange has multiple boss and groove, and handy they support lock pawl bifurcate end and stable position of locking pawl when assembling.

So, prevent that these boss and groove are exposed to the slide fastener surface, just must hide them with the lock pawl, crotch just must have the width bigger than required size like this, and its result is affected the appearance of slide fastener.

In addition, if the slider body punching press forms, problem of appearance is particularly crucial.In punching course, crooked and punching can not bring any problem, and when above-mentioned flange of punching press and groove, will cause plastic deformation in the zone that is stamped, so in order to prevent any plastic deformation in the punching course, just must clamp slider body securely along the zone that is stamped, consequently will leave in stamped area by the caused catcher mark of mounting board.The part catcher mark can't cover in by crotch fully because limited these catcher marks of width of crotch are too many, so can be presented in the slide fastener surface and make the product appearance not attractive in appearance.

Summary of the invention

The objective of the invention is,, guarantee to lock the location of pawl and stablizing of position thereof in punching press and between erecting stage, thereby provide a kind of self-locking slide fastener, no matter be to have the crotch appearance of minimum widith, still, all have the smooth clean and tidy appearance of no impression at the exposed surface of slider body upper flange.

By first aspect present invention, above-mentioned purpose realizes that by the self-locking slide fastener that is used for slide fastener it comprises: the slider body that an opening is arranged on that the upper and lower wing plate that is connected by joint is formed and the upper flange; A part that strides across handle is installed on the C shape lock pawl on the slider body; Above-mentioned lock pawl flexibly is pressed in sheet spring on the described upper flange; Hold described lock pawl and sheet spring and pivotally support the crotch of shaking hands.In slide fastener, slider body is formed by the method for punching press, is bright and clean surface on the upper flange, and does not leave over the caused any impression of punching press, and the lock pawl is narrow rigid disk.By second direction of the present invention, above-mentioned purpose realizes that by the self-locking slide fastener that is used for slide fastener it comprises: upper and lower wing plate is linked to each other, is had on the upper flange slider body of an opening by joint; A part that strides across handle is installed on the C shape lock pawl on the slider body; Described lock pawl flexibly is pressed in sheet spring on the described upper flange; The crotch that holds described lock pawl and sheet spring and rotatably mounted described handle.In slide fastener, slider body is stamped to form, and a pair of opposed boss is arranged on the crotch, and it form a space and lock pawl by boss respective side guiding between two boss, thereby falling down of pawl is locked in restriction by the corresponding inwall protrusion of crotch.The lock pawl is a rigid disk.More excellent is to have inclined surface at lock pawl top edge, so that become frictional constraint with corresponding boss; More preferably locking pawl one end is fixed in the fixing groove that is formed in the slider body joint outward flange; More excellent is, crotch comprises the supporting leg part, and it is fixed in the fixing groove that is formed on slider body connector portions office.

When assembling slide fastener of the present invention, at first, after the annular end of handle places upper surface one precalculated position of slider body upper flange, again the lock pawl is placed on the slider body temporarily, and make it stride across the annular end of handle.Simultaneously, the slave part of lock pawl injects and is formed in the supporting groove of slider body joint, and the ratchet partial relaxation ground of lock pawl injects in the upper flange opening, and in this state, the ratchet top puts in the slider body gathering sill so that contact with slide fastener.When handle and lock pawl when being positioned on the slider body, the boss supporting that the sheet spring is arranged in crotch and is stretched out by the crotch sidewall from the bottom surface.

Then, the crotch that the sheet spring is housed is installed on handle and the lock pawl position slider body thereon, and crotch one end injects in the vertical trench that is formed on the outside place of snap-fit connectors with fixing crotch, and the other end is fixed on the slider body away from tip side.At this moment, although the interim lock pawl of placing presents inclination to a certain degree, the lock pawl still is in the gap between the relative lock pawl boss, and is in stand up position.And lock pawl top edge formed inclined plane is by the boss orientation, so as to make be arranged in crotch the sheet spring accurately and have and flexibly be pressed on lock pawl upper surface.

Secondly, the openend of crotch fixing groove is also fixed crotch one end securely from two corresponding sides fastenings, and the crotch other end then is fixed on the slider body, so far finishes the assembling of slide fastener.For final slide fastener of the present invention, although the lock pawl that is not located in the crotch with traditional wide lock pawl is very narrow rigid disk shape, and be difficult to keep its predetermined attitude of throwing off restraint, but be formed on two inclined planes on the lock pawl top edge still by opposed boss orientation, so when handle moves the lock pawl, can produce engaging and disengagement of lock pawl and connector reliably.

In addition, because the lock pawl has very little width along length overall, because of the slider body upper flange carries out punching press in minimum zone, in fact do not have impression to be retained in the upper flange outer surface, and crotch have the minimum dimension of enough covering stamped area on the other hand on the one hand.Its result makes lock pawl and sheet spring be arranged in crotch compactly becomes possibility.Though it is little that this crotch and traditional wide crotch are compared width, because of slider body upper flange appearance does not have impression, so still can obtain slide fastener very attractive in appearance.

Description of drawings

Fig. 1 is the decomposition diagram by the self-locking slide fastener that is used for slide fastener of the present invention's one exemplary embodiments;

Fig. 2 is the decomposition diagram that one of slide fastener installation step is shown;

Fig. 3 represents the mode that the crotch boss moves in slide fastener with lock pawl upper angled face;

Fig. 4 represents the external view of slide fastener;

Fig. 5 is the slide fastener longitudinal sectional view;

Fig. 6 is the cross-sectional view along X-X line among Fig. 5.

The specific embodiment

An exemplary embodiments of the present invention is described with reference to the accompanying drawings.Fig. 1 is the decomposition diagram by the self-locking slide fastener of the embodiment of the invention.Self-locking slide fastener 1 comprises that upper and lower wing plate is connected as a single entity by joint 13 by upper and

lower wing plate

11 and 12 slider body of forming 10, thereby limits a Y shape gathering sill, is used for the relative connector of two rows that guiding figure does not express, and opening 11a is arranged on the upper flange 11.Slide fastener 1 also comprises C shape lock pawl 30, and the annular end 21 that it strides across handle 20 is installed on the slider body 10; One spring 40, it flexibly is pressed on dead bolt on the outer surface of upper flange 11; And a crotch 50, handle 20 pivotally is installed on it and can rotates around annular end 21.

In the illustrated embodiment, whole slider body 10 drawings, joint 13 has a vertical support groove 13a along its external margin, and an end of lock pawl 30 inserts wherein; One vertical crotch fixing groove 13b, an end of crotch 50 insert and fix wherein.Crotch fixing groove 13b outwards becomes ladder ground opening from groove 13a, and its width is greater than the width of groove 13a.Two groove 13a and 13b are with joint 13 drawings.The first boss 13c that stretches in one couple is arranged, their same drawings on the groove 13b two opposite side walls.In addition, upper flange 11 has a crotch coupling part 11b at the end towards opening 11a, and its drawing fixes the other end of crotch with the mode of chucking.

One of distinguishing feature of the present invention is that opening 11a and crotch coupling part 11b punching press on the upper flange of slider body 10 form.Because opening 11a is formed by punching, so impression only produces around Stamping Area.Again because of crotch coupling part 11b one end opens wide, so almost without any the shaping impression.In addition, because of Stamping Area is hidden by crotch 50 fully, so the upper flange appearance of crotch 50 be cannot see any inaesthetic place.

Handle 20 is generally the rectangular metal sheet that conventional method is stamped to form, and its annular end 21 has a square hole, and the other end has square hole 22.Spring 40 is a slice spring, is the simplest conventional shape.If lock pawl and sheet spring are made into conventional solid memder structure, this member must have bigger width.And in the present invention, because lock pawl 30 and the parts of sheet spring 40 for separating, thereby the width of two modular constructions can be reduced to minimum size, thus the width of box-like crotch 50 is significantly reduced.

Among the present invention, lock pawl 30 is one of vitals of slide fastener, as can be seen from Figure 1, and lock pawl 30 no any elasticity own.Especially lock pawl 30 and be common C shape sheet metal, it has the minimum widith that can guarantee required rigidity and intensity, and punching press or die casting form.There is the leg 32 of connection lock pawl 30 rear ends (Fig. 6 left side), it and slider body 10 assemblings and substantially the same with lock pawl body 31 thickness.The front end of lock pawl has the ratchet part 33 at a lateral run-out lock pawl body 31 centers.Ratchet 33 be in eccentric position can fill among the figure because of ratchet 33 do not express, in the gathering sill of slider body 10, guide opposed two row connectors in one row connector the adjacent elements parts of tooth between the slit in.Like this, when unclamping, handle can prevent that slide fastener from sliding on connector.

Another characteristics of lock pawl 30 are in each top edge of the opposite side of lock pawl body 31 a pair of inclined-plane 34 to be arranged.In the slide fastener assembling process, these inclined-planes 34 are owing to guiding between relative second boss 54 (below will describe) of crotch 50 is used for automatically keeping locking pawl 30 in stand up position.

Compare with conventional structure, crotch 50 is the shape of elongated box body 51, at one end has the first fixed supporting leg part 52 that to insert the crotch fixing groove 13b that is arranged on the slider body 10, have the second fixed supporting leg part 53 at the other end, it can be fixed on the upper flange 11 of slider body 10 by the last crotch coupling part 11b that fastening is formed at upper flange 11.The first fixed supporting leg part 52 has the sufficient length of inserting among the crotch fixing groove 13b, and at its edge, two opposite sides a pair of first otch 52a is arranged, wherein holding from the two opposite side walls of crotch fixing groove 13b and fixing the first boss 13c to projecting inward crotch.

In addition, there is a pair of second otch 51b at box body 51 two opposite side walls 51a centers, and the annular connecting portion 21 of handle 20 passes wherein and pivotally and connects, and like this, handle 20 can rotate by pivot in predetermined angular range.Also have a pair of second relative boss 54 on the box body 51, it stretches out from the edge of the relative lateral alignment of the second otch 51b.By illustrated embodiment, second boss 54 is parallel to opposing sidewalls 51a and protrudes before slide fastener 1 assembling, after sheet spring 40 was installed in the box body 51, second boss 54 bent inwards in assembling process, can install sheet spring 40 so easily and by 54 supportings of relative second boss.Certainly, the box body 51 that can place second boss 54 inwardly to stretch out sheet spring 40.Yet in automatic assembling, need be after sheet spring 40 places box body 51 bending second boss 54 again.In above-mentioned assembling process, second boss 54 is also with helping location lock pawl 30 and making its position keep stable.For this reason, the second relative boss 54 should be positioned at and lock the opposing inclined face 34 corresponding positions that form on pawl 30 top edge.

Fig. 2 holds the crotch 50 of sheet spring 40 and the mode of slider body 10 assemblings after being illustrated in above-mentioned handle 20 and locking pawl 30 and placing on the slider body 10.At first, handle 20 annular connecting portion 21 places the center on the upper flange 11 of slider body 10 basically, locking pawl 30 then strides across annular connecting portion 21 and places on the slider body 10 temporarily, at this moment, among the fixing groove 13a that the connecting pin part 32 of lock pawl 30 injects in the joint 13 that is formed at slider body 10, and ratchet part 33 is loosely inserted among the opening 11a.At this moment, the top of ratchet 33 puts in the connector gathering sill of slider body 10, engages with two row's connectors of not expressing among the figure.When handle 20 placed on the slider body 10 with lock pawl 30, sheet spring 40 placed crotch 50.Then, be formed at the second relative boss 54 on the second otch 51b edge of crotch 50, be used for from relative supported at two edges sheet spring 40 inwardly mutually towards the other side's bending.

Then, the crotch that holds sheet spring 40 50 shown in Figure 2 is assembled on the slider body 10 that is equipped with handle 20 and lock pawl 30 from the top.Among the crotch fixing groove 13b that the first fixed supporting leg part 52 of crotch 50 injects in the joint 13 that is formed at slider body 10, simultaneously, the inner surface of the second fixed supporting leg part 53 contacts with the outer surface of crotch coupling part 11b, at this moment, even the interim lock pawl of placing 30 has lateral tilt to a certain degree, when the inclined-plane 34 of lock pawl 30 is guided by second boss 54, the lock pawl be imported in the gap between the second relative boss 54 and become upright, thereby the sheet spring 40 that is arranged in crotch 50 is flexibly contacted with the upper surface of locking pawl 30.

Then, with the openend of the crotch fixing groove 13b of joint 13 from the fastening of relative both sides, be used for fixing the first fixed supporting leg part 52 of crotch 50, the second fixed supporting leg part 53 of crotch 50 is bent inwardly into L shaped and is fixed on the slider body 10 around crotch coupling part 11b.So far, finish the assembling of slide fastener 1.During the fastening, the first crotch fixing lug boss 13c that stretches out from crotch fixing groove 13b two relative inwalls is stuck in each first otch 52a on the first fixed supporting leg part 52, limits the vertical of crotch 50 like this and moves.

For as mentioned above of the present invention and slide fastener 1 that assemble, although as shown in Fig. 4-6, be contained in lock pawl 30 in the crotch 50, different with common wide lock pawl, form with very narrow rigid disk, when handle is decontroled, because laterally moving of lock pawl 30 limited by the second relative boss 54, its predetermined comfortable attitude can keep stable always, engages and throws off thereby can make lock pawl 30 and two arrange connectors reliably.

In addition, on the one hand since lock pawl 30 width is seldom on its whole length, on the other hand owing to opening 11a and crotch coupling part 11b on the upper flange that has only slider body 10 are formed by punching and mold pressing, so in fact the surface of upper flange 11 does not have impression, so crotch 50 can have the minimum widith that is enough to hide opening 11a and crotch coupling part 11b.Therefore, have width smaller even compare crotch of the present invention with traditional crotch, lock pawl 30 and sheet spring 40 still can be compact is arranged in crotch 50, and any impression can not occur on the outer surface of the upper flange 11 of slider body 10, thereby can produce surface aesthetic, the slide fastener 1 of profile uniqueness.

From above-mentioned, can clearly find out, in self-locking slide fastener of the present invention, on the one hand since have on the box-like crotch 50 a pair of from opposing sidewalls 51b to the projecting inward second relative boss 54, on the other hand because lock pawl 30 top edge have a pair of and second boss, 54 corresponding inclined planes 34, like this, making the lock pawl is narrower in width, the C shape sheet that intensity is very high, the lock pawl still can keep in position when slider body is assembled, therefore, whether no matter blocking mechanism move, and can prevent that all locking pawl falls down from side direction, and lock pawl 30 can engage with two row's connectors and throw off reliably.

In addition, on the one hand because above-mentioned lock pawl 30 width are little, on the one hand, leg 32 has enough distances because injecting and be supported in to make between fixing groove 13a and the ratchet 33 between the supporting leg part 52 of vertical fixing groove 13a in joint 13 outsides that are formed on the slider body 10 and crotch 50, so can strengthen lock pawl 30 with respect to the joint of two row's connectors with break away from action, thus can by handle 20 carry out slide fastener 1 reliably from latching operation.In addition, because the required punch steps on the wing plate of slider body 10 is reduced to minimumly, so the productivity ratio that can obtain, the impression on upper flange surface also can be avoided to greatest extent.Therefore, owing to compare with traditional crotch, lock pawl 30 and sheet spring 40 are separating member, so crotch 50 can have width smaller and profile more attractive in appearance.Thereby make resulting slide fastener not have impression, have profile very attractive in appearance in the slider body appearance.

Claims

1. self-locking slide fastener that is used for slide fastener, it comprises:

(a) slider body formed of the upper and lower wing plate that is connected together by joint has an opening on this upper flange;

(b) part that strides across handle is installed on the C shape lock pawl on the slider body;

(c) above-mentioned lock pawl flexibly is pressed on sheet spring on the described upper flange;

(d) hold the crotch that described lock pawl and sheet spring also pivotally support described handle;

(e) described slider body is stamped to form in such a way, makes the smooth smooth impression that do not have on the upper flange, the rigidity sheet that described lock pawl is a narrower in width.

2. self-locking slide fastener that is used for slide fastener, it comprises:

(c) described lock pawl flexibly is pressed on sheet spring on the described upper flange;

(d) hold the also crotch of rotatably mounted described handle of described lock pawl and sheet spring;

(e) described slider body is stamped to form, and described crotch has a pair of relative boss that protrudes from its relative inner wall surface, a space is arranged between them and guide described lock pawl from opposite side, falls down to limit described lock pawl, and described lock pawl is a rigid disk.

3. the described self-locking slide fastener of claim 2 is characterized in that described lock pawl top edge has the inclined plane, is used for being frictionally engaged with corresponding boss.

4. the described self-locking slide fastener of claim 2 is characterized in that described lock pawl one end is fixed in the fixing groove in the joint outward flange that is formed at described slider body.

5. the described self-locking slide fastener of claim 2 is characterized in that described crotch comprises a fixed supporting leg part, and it is fixed in the crotch fixing groove in the joint that is formed at described slider body.